Behavioral Characteristics Analysis for Earthquakes of the Similar Performance Equipment

Damage to nuclear power plants results in loss of life and environmental disasters. Safety-related equipment installed in the nuclear power plants are controlled by electrical control equipment. Safety-related equipment are required to have seismic performance. In this study, the seismic performance of the motor control center (MCC), an electrical control equipment, is tested. Therefore, a shaking table test was conducted using the design response spectrum and uniform hazard spectra. The equipment installed in the nuclear power plants are supplied by various manufacturers. Because the seismic performance of MCC varies depending on the design and manufacturing method, the shaking table test is conducted for two different MCCs with the same function. The dynamic characteristics and shapes of two different types of MCCs were compared, and the seismic performance according to the shape was examined. Additionally, the difference in seismic performance according to the structural shape was examined through seismic fragility tests.